Jayaweera,Upali  <br/><br/>
Science Grade 6 : 

 - Samudara :  Colombo ;  2015. 
 - 106p ; 22cm .  01 
 - 2024-06-07 
<br/><br/><label>ISBN: </label>9789556804089 
<br/><br/><label>Nat. Bib. No.: </label>0003833 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>JAY 
<br/><br/><label>Universal Decimal Class. No.: </label>500